Cruise ships usually just spend one precious day in port — and we want to help you make the most of it.

To give you the best chance of an enjoyable visit, we’ve created a custom “Best Time to Visit” score for each month, unique to each destination. The score is calculated using factors that are likely to matter the most:

• Comfortable temperatures
• Lower rainfall and fewer rainy days
• More daylight hours
• Moderate UV levels

Each score is based on historical monthly averages and adjusted for each port’s climate. We weight the above factors — for example, long daylight hours and fewer wet days matter more when you're only ashore for part of the day. That's also why no month gets a 10/10, as there's always a trade-off. For example, warmer weather and clear skies comes with higher UV (and more sweat!).

This chart isn't meant to suggest that a port is bad to visit outside the highest rated months — each season provides something memorable for each location. But if you’re deciding when to cruise, this will hopefully give you the best chance of having perfect weather on your visit.